By putting his signature on the Americans for Tax Reform pledge, Guinta promises to oppose higher taxes “at every turn.”

The two-term Republican congressman from Manchester is running for re-election this year. He faces a serious primary challenge from Bedford businessman and 2010 congressional candidate Rich Ashooh.

According to his campaign, Guinta’s the only candidate in the race for the 1st Congressional District to sign the pledge.

“Low taxes are the key to prosperity, freeing Granite Staters to pursue their dreams, without the burden of the federal government weighing on their backs,” Guinta said in a statement.

His campaign highlighted that as Manchester mayor, Guinta cut taxes and balanced the budget of New Hampshire’s largest city.

Guinta noted that the federal government’s raising what he called “record” taxes, but said that “Americans' trust in government is at a low point. That's because the tax burden falls mostly on the middle class, the engine that drives our economy.”

"Over-budget federal programs from Obamacare to the IRS and TSA are failing to deliver results. Some fiscal restraint would pressure them to be more efficient and effective,” he continued.

Norquist’s long standing pledge was once a must signature for just about any GOP congressional candidate, and to this day the vast majority of House and Senate Republicans have signed it.

“We are ecstatic about Guinta’s commitment to the taxpayers of New Hampshire. I challenge all candidates for New Hampshire’s First Congressional district to make the same commitment to taxpayers by signing the Taxpayer Protection Pledge today,” he said in a statement.

The winner of September’s GOP primary in the 1st CD will face off in November against former Democratic congresswoman Carol Shea-Porter or first time candidate Shawn O’Connor.

New Hampshire’s 1st CD is one of the most high profile swing districts in the country.